In the UK its law that they have to do a complete return and refund cos you couldn't check the product in store (Distance Selling regulations) - but he WILL have to pay to ship it back and it will be his responsibility to insure it etc to make sure it gets back in 1 piece .... some stores will arrange a courier for you but will charge for it..... they HAVE to give him 100% back the retail price less shipping though.

An actual store *might* want to charge you a restocking fee for unwanted but not faulty goods.... can be up to 10%

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